Ha. Understood on trail access. I got my Pivot Shuttle down a few pounds.
Don't wait 5 years. Life is short. It will let you session your favorite segments way more, and you'll be able to get out riding/training more. Plus, I've found that wrangling the 40+ pounder around the same trails I usually ride on my Santa Cruz, and riding 1.5X the number of rocks and roots, is a great whole body workout that makes the SC feel like a flickable nothing when I hop on it.
Regarding the 12 speed tranny, yeah, I think it's for exactly that reason. And it does happen. Also, with a 50 tooth and a gummy tire you could probably ride up the side of a building on full boost, if you could somehow manage to keep the front end down. ;-)